基于HYDRUS-2D的宽垄沟灌冬小麦水氮运移模拟  

Simulation of Nitrogen Transport in Wide Monopoly Furrow Irrigation Based on HYDRUS-2D

作　　者：邢云飞 马莉 张昊[2] 田光照 XING Yunfei;MA Li;ZHANG Hao;TIAN Guangzhao(Zhaokou Sub-centre,East Henan Water Security Centre,Kaifeng 475000,China;North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]河南省豫东水利保障中心赵口分中心,河南开封475000 [2]华北水利水电大学,河南郑州450046

出　　处：《河南水利与南水北调》2024年第4期75-76,共2页Henan Water Resources & South-to-North Water Diversion

基　　金：华北水利水电大学大学生创新创业训练计划项目(2023XB280)。

摘　　要：针对宽垄沟灌冬小麦水氮施用的问题,该研究选定60%田间持水率(W_(1))、70%田间持水率(W_(2))和80%田间持水率(W_(3))三个土壤水分控制下限,以及120 kg/hm^(2)(F_(1))、220 kg/hm^(2)(F_(2))和320 kg/hm^(2)(F_(3))三个施氮量水平进行不同水氮处理下田间水氮运移实验,并基于田间试验实测数据,通过HYDRUS-2D构建宽垄沟灌土壤水氮运移数值模型,分析数值模拟不同水氮处理下土壤水氮分布与运移的可行性。结果表明:土壤含水率、铵态氮和硝态氮实测值与模拟值具有很好的一致性,研究结果可为引黄灌区不同水氮处理宽垄沟灌冬小麦土壤水氮运移机理研究提供依据。In order to address the problem of water and nitrogen application of winter wheat with wide furrow irrigation,the study selected three lower limits of soil moisture control,60%field water holding capacity(W1),70%field water holding capacity(W2)and 80%field water holding capacity(W3).In additon,three levels of nitrogen application,120 kg/hm^(2)(F1),220 kg/hm^(2)(F2),and 320 kg/hm^(2)(F3),were selected to carry out the study on the water and nitrogen transport of winter wheat of dfferent water and nitrogen treatments.The water and nitrogen transport experiments were carried out in the field under different water and nitrogen treatments.Based on the measured data of the field experiments,a numerical model of soil water and nitrogen transport in wide-row furrow irrigation was constructed by HYDRUS-2D to analyse the feasibility of numerical simulation of soil water and nitrogen distribution and transport under different water and nitrogen treatments.The results showed that the measured values of soil moisture content,ammonium nitrogen,and nitrate nitrogen were in good agreement with the simulated values.The results of this study can provide a basis for the study of soil water and nitrogen transport mechanism of winter wheat in different water and nitrogen treatments in broad-row furrow irrigation.

关 键 词：HYDRUS-2D 水氮运移 数值模拟 

分 类 号：S275.3[农业科学—农业水土工程]